William cutts



(No Model.)

w. GUTTS. PASTENER FOR FRAME JOINTS; I No. 349,631... Patented-Sept. 21.1886.

. UNITE STATES PATENT OFFICE.

XVILLIAM CUTTS, OF TORONTO, ONTARIO, CANADA,

FASTENER FOR FRAME-JOINTS.

SPECIFICATION forming part of Letters Patent No. 349,631, datedSeptember 21, 1886.

Application filed January 28, 1886. Serial No. 190.090. (No model.)

, Joints, of which the following is a specification.

The object of the invention is to design an efficient fastening forframe-joints more partic ularly applicable to picture-frames; and itconsists, essentially, of a plate pivoted on one side ,of the joint, andhaving a curved slot eccentric to its pivot formed 'in the plate, anddesigned to receive a headed pin or screw inserted into the portion ofthe frame 011 the opposite side of the joint from which the plate ispivoted, so that byturning the said plate upon its pivot the two partsmentioned of the frame are either expanded from or contracted towardeach other, substantially as and for the purpose hereinafter moreparticularly explained.

The drawing represents a perspective view of a frame provided with myimproved pivoted joint-plates.

In the drawing I show a frame having a plain miter-j oint at eachcorner, and a bar having plain ends inserted in the center of the frame.

A represents my jointplate shaped substantially as shown, and pivoted ata to the portion of the frame which I mark B. A curved slot, 1), is madein the plate A eccentric to its pivot a, through which slot the headedpin or screw 0 passes, which pin or screw is inserted into the portionof the frame marked D, so that the pivot-pin a is on one side and-thepin or screw 0 on the other side of the joint 01. Consequently, as theslot 1) is eccentric from the pivot a, the turning of the plate upon itspivot must necessarilyeither expand or contract the j oint that is tosay, if the plate is moved in the direction indicated by arrow, thejoint (I is expanded; but if moved in the direction indicated by thedouble-headed'arrow, the joint d is contracted, as shown at the jointrepresented by the double-headed arrow.

From this description it will be seen that my improved fastener forframe-joints enables an located as described, and fitting into the curvartist to make an extremely light frame, and as no tongue and groove orother form ofj oint diflicult to make is necessary, an unskilled personis able'to make a suitable frame by the adopt-ion of my fastener forframe-joints.

I11 the case of large picture'frames in which the joints are gluedtogether, my fastener may be employed for maintaining the joint bycontracting the two parts, as indicated at the joint where thedouble-headed arrow isshown.

I speak of the screw 0 as a headed pin or screw. I refer to the headbecause it is essential that a head should be formed on the pin or screwwhich passes through the slot 1), in order that theplate A .may be heldwith sufficient force against the frame to prevent it turning on itspivot when set. 7

With the view of enabling the pin or screw 0 to be inserted in or takenout of the slot 1) without being removed from its position, I form anenlargement, e, at one end of the slot b sufficiently large to permitthe head of the pin or screw 0 to pass through in order that the shankof the pin or screw C may enter the slot 1).

What I. claim as my invention is- 1. A plate, A, pivoted at a on oneside of the joint of the frame, and having a curved slot, I), made in iteccentric to its pivot a, in combination with a headed pin or screw, 0,

slot 1), substantially as and for the purpose specified.

2. A plate, A, pivoted at a 011 one side of the joint of the frame, andhaving a curved slot, 1), made in it eccentric to its pivot a, and

an enlargement, e, at one end of the slot b,

in combination with a headed pin or screw,

0, located as described, and fitting into the curved slot 1),substantially as and for the purpose specified.

Toronto, January 18, 1886.

\VM. OUTTS.

I11 presence of-- R. P. ECHLIN, FRED. W. GARVIN.

